REMEHA Quinta 30 Technical Information page 47

8.4.2 Analog control (0-10 Volt dc)
The heat output modulates between the minimum and the maximum value on the
basis of the voltage supplied by an external analog
(0 -10V) input (terminal connections 1 (gnd) and 2 (+)).
- Temperature based (20 to 90°C) set the x value of the boiler control operation
parameter (A) to 4.
To set the ratio between voltage and the desired flow temperature, see Par. 6.6.15
and the graph below.
- Output based - fixed parameters (20 to 100%), see graph below.
0 Volt
0.5 - 2.0 Volt = heat input 20%
2.0 - 10 Volt
Set the x value of the boiler control operation parameter (A) to 5.
NOTE: When using an external analog (0 -10V), the factory default 03should be
changed to 00.
100
90
80
70
60
50
40
30
20
10
0 1 2
Off On
Fig. 18 Temperature
8.4.3 On / off control (1 x no volt switched pair)
The heat output modulates between the minimum and the maximum value based on
the set flow temperature, terminal connections 3 and 4.
Set the x value of the boiler control operation parameter (A) to 1.
57117.indd 47 57117.indd 47
= boiler off
= boiler modulates between 20 and 100% on demand
3 4 5 6 7 8 9 10
Input voltage [V ]
100
90
80
70
60
50
40
30
20
10
0 1 2 3
Off On
Fig. 19 Output
47
4 5 6 7 8 9 10
Input voltage [V ]
1-4-2009 14:35:53 1-4-2009 14:35:53